Hollow Earth
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Hollow Earth is a concept proposing that the planet Earth is entirely hollow, or contains a substantial interior space. Notably suggested by Edmond Halley in 1692 conjectured that the Earth might consist of a hollow shell about 800 Kilometers thick.Submit your stories: [email protected] Get 55% off your Babbel subscription at babbel.com/popOur Instagram page: @reddit_explains
